Door-latch



UNITED STATES PATENT OFFICE.

HENRY HAGKMAN, JR., OF PAQUE, PENNSYLVANIA.

DOOR-LATCH.

Specification of LettersPatent No. 22,234, dated December 7, 1858i.

To all whom t may concern:

Be it known that I, HENRY HAGKMAN, J r., ot' Paque, in the county of Lancaster and State of Pennsylvania, have invented a new and Improved Push-and-PullY Door Latch or Fastener; and I do hereby declare that the following is a full and clear description of the saine, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a perspective view of the interior of the latch; Fig. 2, the revolving latchbolt, with the levers G, G, peg I and spiral spring K; Fig. 3, the knobbed and shouldered shank or push and pull handle; Figs. tand 5, two forms of spring catches, to hold the door closed; Fig. G, the latch and catch in place.

Its construction and operation is simple. The frame or latch box D, D, C inade as usual, having a partition piece B, dividing the interior into a lesser and a greater chainber. The pivot N, of the bolt E, Figs. l and 2, enters the side A of the traine, supported in the partition B and projects with its notched end H, to the spring catch O on the door. Frame-plate S, Figs. 4, 5 and 6, through the front side C, of the latch-frame. On the bolt E, are two upright levers G, G, the external one having a peg I, resting on the end of a coiled spring K fastened by a screw N, or otherwise in the upper inside corner of the endpiece A of the latch traine. The knobbed shank L, has a shoulder` m, which is in Contact with the lever arins G, G, the narrower portion V of the shank lying closely between the arins G, G, at a distance above the bolt E, the spring K, holding the lever arins close against the shoulder m, so that a simple pull from one side or a push against the knob on the other side inclines the lever arins G, G, which being iirinly iixedwtvo therbgltglV CullSesvit to revolve in the direrftionoijhe bent arrows Figs. 4, 5, and tp'issing with its notch-ed end H, on the spring catch O, (either hinged as at It, Fig. 5, or as shown in Figs. it-6,) thereby depressing it so as to allow the rounded bolt to pass over it.` The check catch t, Figs. 4-6 prevents the spring from rising higher than is necessary.

P is the support for the spring catch O, iig. i. The hinged catch has a spring Q, beneath it Fig. 5. l

The shoulder m, on the shank L is rounded beneath, so as to adapt it to the inclination of the lever arms when operated Yon.

Ordinary key locks may be used in connection with thein, and the several parts so inade as to be used either for right or left doors, and are deeined superior to weights for keeping the doors firmly closed, where a push and pull door is desired. Y

IVhat I claiin as iny invention, and desire to secure by Letters Patent is- The revolving bolt E, the lever arins G, G, peg I coiled spring K, the shouldered shank L, and spring catch O, when combined and used substantially as herein described.

JACOB STAUF'FER, E. M. CLARKE. 

